Filter



(No Modem P.- BOMMARIUS.

. FILTER.

No. 519,565. Patented May 8,1894.

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FILTER.

SPECIFICATION formingpart f Letters Patent N0.-5 19,565, dated May 8, 1894. Application led August 25, 1893. Serial No. 434,028. (No model.)

To all whom it may concern:

Be it known that I, FREDERICK BOMMARIUS, of New Orleans, in the parish of Orleans and State of Louisiana, have invented a new and Improved Filter, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new andimproved filter, which is simple and durable in construction, very effective in operation, designed for high or low liquor pressure, more especially designed for filtering water used for drinking and other purposes, and arranged to permit of conveniently and thoroughly cleaning the filtering material whenever necessary.

The invention consists of certain parts and details and combinations of the same, as will 'be hereinafter described and then pointed out in the claim.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in both the figures.

Figure l is a sectional side elevation of vthe improvement on the line l--I of Fig. 2; and Fig. 2 is a plan view of the same, with parts broken out. y The improved filter is provided with acasing A, preferably made cylin drical and closed at its lower end by a head B, provided with legs C for conveniently supporting the filter on a table or other suitable support. The upper end of the casing A is closed by a head D connected by screw bolts E within the lower head B, so as to hold the heads securely to the casing. l

On the lower headB are secured upwardly` extending rods I", carrying at their upper ends a ring G arranged a .suitable distance above the head B within the casing A and at the interior surface thereof. On this ring G is seated a revoluble screen H, preferably made of two perforatedH plates with a* wire netting between the same. The screen H is secured on a shaft H', arranged centrally Within the casingAand mounted to turn with its lower end in a step B formed on the upper surface of the lower head D. The screen H may be removed from the shaft, as it is held between a collar H4 formed on the shaft, and a jam nut N engaging a screw-threaded portion of the shaft. The upper end of the shaft H extends through a suitable stung box D', arranged on the upper head D, and on the outer end of the said shaft H' is secured a hand wheel H2 for conveniently turning the said shaft andthe screen H secured to the shaft. On the shaft H is also secured, by a set screw, a collar H5, abutting against the under side of the upper head B, so as to prevent the screen I-I from being unseatedon thev ring G, in case of an upward pressure on the under side of 'the screen. The filtering material I is placed in the upper part of the casing A so as to rest on thescreen H, as plainly shown in the drawings. The water to be iltered is passed through avalved pipe J, into the upper end of the casing A,the said pipe v .passing through the head D; a valved. pipe K- lcading from the lower -head B serves to withdraw thefiltered water from that part of the casing extending between the headB and thering G and screen H. In order to clean the filtering material, I provide a valved pipe L, leading into the lower part of the casing A, through the head B, and a valved pipe N leads from the upper part of the said casing and is connected with the head D. When the several parts are in the position shown in the drawings,.and the valves in the -pipes L and N are closed and the valves in the pipes J and K are open, then the water to be filtered, flows through the pipe J into the casing A and filters through the material I and the screen H into the lower part of the casing A, tofinally pass, in a filtered condition, out ofthe casing through the pipeK. When the filtering material I becomes filled with impurities and it is necessary to Wash the filter, then the yalves in the pipes J and K are closed and the filtering process is temporarily interrupted. The pipes L and N are then opened so that the water flows through the pipe L into the lower part of the casing A through the screen H and filtering material I, to finally pass out through the pipe N, carrying along the impurities contained in the ltering material. In orderto agitato the filtering'material I while this process of Washing is going on, the operator turns the hand wheel H2 so as to revolve the screen H, thereby causing the loosening of the filtering material I and thebreaking up of the germs previously formed during the process of ltering IOO the screen H. When the valves in the pipes J and K are again opened, then the process of ltering the water again proceeds, as above described.

It will beseen that the operator can conveniently and readily agitate thetiltering material during the process of washing by re- Volving the screen I-I, so that all the impurities are rapidly removed and the filter is properly cleaned.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent- A filter,` comprising a casing provided with inlets and outlets, a shaft journaled in bearings at the top and bottom of the casing, and provided with a collar and a screw-threaded portion, a screen adapted to removably iit on theshaft, a jam nut adapted to engage the threaded portion of the` shaft to press the screen against the collar so as to compel the screen to -rotate with the shaft, and a stationary ring held in the casing a suitable distance above the bottom to form a seat on which the marginal portion of the screen is adapted to slide during its rotation, substantially as described.

FREDERICK BOMMARIUS.

Vitnesses:

JNO. J. WARD, Guns. M. HERO. 

